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