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