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