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