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