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