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