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)(12,13)(14,24)(15,19)(17,22)(18,21)(20,23) involution — undirected(2,5)(6,8)(9,11,15,17)(10,16,19,22)(12,21,20,14)(13,18,23,24)(1,3,4,7)(2,6,5,8)(9,12,14,11,15,20,21,17)(10,16,18,13,19,22,24,23)(9,13,21,16,15,23,14,22)(10,17,24,20,19,11,18,12)(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.