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