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