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