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