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