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