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