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