One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(9,10,12,13)(11,15,16,14)(17,18,21,19)(20,22,24,23)(6,8)(10,13)(14,15)(17,18)(19,21)(20,23)(22,24) involution — undirected(5,6,7,8)(11,16)(14,15)(18,19)(22,23)(1,2,3,4)(9,11)(10,14)(12,16)(13,15)(17,19,21,18)(20,22,24,23)(9,10)(11,15)(12,13)(14,16)(17,20)(18,22)(19,23)(21,24) 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.