I worked with UNStudio, and I love their diagrams. They're relentlessly beautiful and sensitively curated. There are a lot of them, exhaustive in quantity, but they all share a clear visual and conceptual paradigm, and that's what I find hard to replicate.
Many diagrams, one language
Most practices make a few diagrams to explain a project. UNStudio makes many, and yet they don't feel like a pile. Every one follows the same visual and conceptual logic, so together they read as one way of thinking rather than a collection of drawings.
Why it's so hard to replicate
Beautiful diagrams aren't the hard part. The hard part is keeping a single clear paradigm across dozens of them. That only works when the concept behind the project is clear enough to be drawn the same way, again and again.
What students can take from it
A good diagram reads like a manga: you can follow it without reading the words. UNStudio's diagrams do that across a whole project. Before adding more diagrams, make sure each one is readable on its own, and that they all speak the same visual language. For how a single diagram works, see What is a parti diagram in architecture? Read it like a manga.
Next step: Bring your diagrams to Mini Studio or Student Coaching.