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