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