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