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