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