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