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