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)(12,13)(15,16)(19,27)(20,23)(24,29)(28,30)(2,6)(7,8)(17,18,21,26)(19,28,27,30)(20,29,23,24)(22,32,31,25)(1,3,5,4)(2,7,6,8)(10,13)(14,16)(17,19,21,27)(18,23,26,20)(22,24,31,29)(25,30,32,28)(1,3,5,4)(2,7,6,8)(9,11,12,15)(10,14,13,16)(17,20,21,23)(18,24,26,29)(19,25,27,32)(22,28,31,30)(1,4,5,3)(2,8,6,7)(18,25)(20,28)(22,31)(23,30)(24,29)(26,32)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.