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