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