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