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