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