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