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