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