Manually, using Omnigraffle. It's not text-driven like Mermaid or Typst. I made a list of all the commands in the docs, grouped them by similarity and then created tables in Omnigraffle. OG has a very cool scale-text-and-graphics feature that allowed the boxes to re-size nicely on the page.
I learned a lot doing it, and thought others would find it useful.
So, there's no source to share, other than the OG file. It seems I have some options:
1) update it myself, or
2) let others make another (utensil has started one using Typst; it's at https://github.com/utensil/helix-cheat-sheet).
I always appreciate the work of others to make useful things, and wanted to give something back, no matter how small. Given my other commitments it will take me about a month or so to bring it up to date.
