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