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