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