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