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