Is there a sketch/map of the "name of God" trap from Indiana Jones and the Last Crusade somewhere on the Internet? I can't find one.
Here is a screen capture from the movie. I got this from Desert-Sky.net "zip file 5" file: 921. This was the most complete screen shot I could find, and I don't own the movie to determine more.
This looks very different from what was portrayed in the comic strip on a different answer. For one thing the letters are not in square boxes in rows, but follow more irregular shapes.
Here are the panels from the comic adaptation. I don't know how accurate the comic was to the film, however:
I have taken a few screenshots from this video in 4K, which I have posted at the bottom of this answer. As far as I know, the only way to get anything better would be to actually own the movie to extract images directly from the video.
Since I have too much free time, I also went through the trouble of trying to draw what I could make out on Paint, although it pains me to admit that the dimensions are most likely wrong. Some tiles are empty, because some of them didn't have anything written, and some others because I couldn't make out what was written:
As a bonus, here's the path Indy took in the movie to reach the other end, numbered in blue from 1 to 6:
Appendix with the various shots of the lettered tiles:
(Notice how the P tile, which was damaged when he jumped on the O tile, is no longer damaged)
I have this book but unfortunately nothing about the "name of god" trap. You can anyway find quite a lot of pictures from props (mainly Henry Jones Sr. Grail Diary pages) coming from this book and a lot of others on this (excellent) page. Quite an amount of great pictures.
But as Henry Sr. didn't see the trap before, he had no drawing on it in his diary.
On all the pages I've seen here and there on the Internet, we can see a lot the Leap of Faith special effect making of but alas nothing about the Name of God trap other than the picture already provided by Jeffrywith1e.