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