Awesome project! Our customers building GraphQL apps on https://scaphold.io would really appreciate something like this.

We currently have a Schema Designer that's fairly intuitive for the most part, and by "most part" I mean developers. Incorporating this tool to graphically show how your data relates would help the less tech-savvy domain experts on Scaphold.io tremendously. Thanks for your awesome work with this and GraphQL APIs (https://github.com/APIs-guru/graphql-apis).

I'd love to help contribute in any way!