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)(11,16)(12,14)(13,15)(17,18,23,19)(20,28,31,32)(21,25,22,27)(24,30,26,29)(2,6)(7,8)(9,11,13,12)(10,14,15,16)(17,19,23,18)(20,24,31,26)(21,25,22,27)(28,30,32,29)(1,3,5,4)(2,7,6,8)(10,15)(11,12)(17,20,22,29,23,31,21,30)(18,24,25,28,19,26,27,32)(1,4,5,3)(2,8,6,7)(9,12,13,11)(10,14,15,16)(17,21,23,22)(18,25,19,27)(20,29,31,30)(24,32,26,28)(11,12)(14,16)(17,21,23,22)(18,25,19,27)(20,30,31,29)(24,28,26,32)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.