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