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