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