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