One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(3,4,5,6)(7,8)(9,13)(10,12)(11,14)(15,16)(17,23)(18,21)(19,22)(20,25)(24,30)(26,29)(27,28)(7,9)(8,11)(10,14)(12,13)(17,24)(19,26)(20,28)(22,29)(23,30)(25,27) involution — undirected(4,6)(15,17,18,25)(16,20,21,23)(19,27,26,24)(22,30,29,28)(4,6)(8,12)(9,14)(16,21)(20,23)(22,29)(28,30) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.