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