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