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