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