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