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