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