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