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