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)(9,12)(10,11)(13,14)(15,16,20,23,19,22,28,30)(17,18,25,27,24,26,21,29)(8,11)(12,14)(15,17,20,25,19,24,28,21)(16,18,23,27,22,26,30,29)(4,6)(7,9,10,13)(8,12,11,14)(15,18)(16,21)(17,23)(19,26)(20,27)(22,25)(24,30)(28,29)(17,24)(18,26)(21,25)(27,29) 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.