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