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