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