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