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