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