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