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