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