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