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