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