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