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