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