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