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