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