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