One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,8)(3,4,5,7)(9,10)(11,12)(13,15)(14,16)(17,18,20,21)(19,23,24,22)(25,26,29,28)(27,30,31,32)(1,3,6,5)(2,7,8,4)(9,11,13,16)(10,14,15,12)(18,21)(22,23)(27,31)(30,32)(2,8)(3,5)(11,16)(12,14)(17,18)(19,23)(20,21)(22,24)(25,27,29,31)(26,30,28,32)(1,4)(2,3)(5,8)(6,7)(9,10)(11,12)(13,15)(14,16) involution — undirected(1,5,6,3)(2,4,8,7)(9,12)(10,11)(13,14)(15,16)(17,19,20,24)(18,22,21,23)(25,28,29,26)(27,32,31,30)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.