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