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