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