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)(19,23)(20,29)(21,25)(22,27)(24,31)(26,30)(28,32)(1,3,5,4)(2,6,7,8)(9,11,14,12)(10,15,13,16)(17,19)(18,23)(20,26)(21,28)(22,24)(25,32)(27,31)(29,30)(1,4,5,3)(2,6,7,8)(9,10,14,13)(11,16,12,15)(17,20,30,23,22,32,21,31)(18,24,25,28,27,19,26,29)(9,12,14,11)(10,15,13,16)(17,21,22,30)(18,25,27,26)(19,28,24,29)(20,23,32,31)(9,13,14,10)(11,16,12,15)(17,21,22,30)(18,25,27,26)(19,29,24,28)(20,31,32,23)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.