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