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