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