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