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