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