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