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