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