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