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