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