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