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