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