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