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