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