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