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