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