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