There's really no end to dot-language diagrams you can have it make. Call graphs, package dependency maps, let it try to figure out an architecture diagram, whatever.
Giving it busywork that you don't have the time or wherewithal to check carefully sounds like a disaster. Rather than introduce content that will be partially wrong and cause confusion if it's ever read, I'd consume the credits and send the output to /dev/null.
Just title it "draft". Odds are nobody will look at it anyway.
Add a pre-commit hook to re-create the diagrams on every commit (in case anything changed, of course), that way you can really burn tokens and look good to management.