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