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