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