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