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