A Selection tool that generates GraphViz files from the selected circuit networks.
A file named combinatorgraph.gv will be put the script-output folder (alongside your saves and mods folders). To turn that into an image, you'll need either graphviz or a compatible tool. With graphviz the relevant commands are "dot" and "neato" and the others in that category, such as the following which will produce a png image like the ones in the gallery:
dot -Tpng -o output.png combinatorgraph.gv
Many other programs that can read and render the graph data are listed here: https://graphviz.org/resources/