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