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