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