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