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