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