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