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