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