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