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