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