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