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