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