How to draw such a beautiful structure？

[JingangLang]

    First of all, thank you for sharing the code and your perfect work.
   And I want to know how to draw the structure chart in your paper.Could you give me some recommended tools?Thanks! @ @junting 
    Of course, I will also be very grateful if any of the friends here can give me some advice.

[kevinmcguinness]

@JingangLang You can draw diagrams like this using Google Drawings (drawings.google.com) or Google Slides. Just play around with the cube shape until it looks like a layer.