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