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