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)(11,12)(13,14)(15,16)(17,18,22,19)(20,23,27,25)(21,24,30,26)(28,31,29,32)(1,2,4,6)(3,5,8,7)(9,11,14,15)(10,12,13,16)(18,19)(23,25)(24,26)(31,32)(1,2,4,6)(3,5,8,7)(9,12,14,16)(10,15,13,11)(20,27)(23,25)(28,29)(31,32)(1,2)(3,5)(4,6)(7,8)(9,10,14,13)(11,16,15,12)(17,19,22,18)(20,25,27,23)(21,26,30,24)(28,32,29,31)(1,2)(3,7)(4,6)(5,8)(9,12)(10,11)(13,15)(14,16)(17,20,22,27)(18,23,19,25)(21,29,30,28)(24,32,26,31)(1,3,4,8)(2,5,6,7)(9,13,14,10)(11,16,15,12)(17,21,22,30)(18,24,19,26)(20,28,27,29)(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.