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