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