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