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