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