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