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