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