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