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