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