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