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