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