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