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