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