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