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