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