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