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