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