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