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