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