We use surya to create contract diagrams.
Run yarn visualize to generate an amalgamated contract visualization in the out/ directory. Or use the below commands for each respective contract.
Run surya graph -s src/YobotArtBlocksBroker.sol | dot -Tpng > out/YobotArtBlocksBroker.png
Run surya graph -s src/YobotERC721LimitOrder.sol | dot -Tpng > out/YobotERC721LimitOrder.png