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