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