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