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