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