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