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