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