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