[Matthew Johnson wrote](https://forum.azimuthproject.org/discussion/comment/16597/#Comment_16597):

> That’s a great picture John, thanks for posting it! I started doing this exercise on my own and understood how to construct the diagram. However, I found it difficult to anticipate exactly how to best lay out the elements to make the structure clear. Are there any techniques available for doing this that are better than experimentation?

I don't know! But when I was a grad student I had a roommate who worked on [VLSI](https://en.wikipedia.org/wiki/Very-large-scale_integration) design - the design of very large integrated circuits. Part of this amounts to taking a graph and trying to draw it in the plane with the fewest crossing. He developed algorithms for doing this sort of thing. Perhaps some of these could be used for drawing pictures like this... but those algorithms weren't developed for visual beauty, so I don't know if they'd create nice pictures. So, I think people just try stuff and see what works.