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