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