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