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