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)(11,14)(12,13)(15,16)(18,24)(19,27)(26,32)(29,30)(1,3,5,4)(2,6,8,7)(17,18,22,24)(19,28,27,31)(20,30,25,29)(21,26,23,32)(1,3,5,4)(2,7,8,6)(10,13)(14,16)(17,19)(18,25)(20,24)(21,30)(22,27)(23,29)(26,31)(28,32)(1,4,5,3)(2,6,8,7)(17,20,22,25)(18,19,24,27)(21,31,23,28)(26,29,32,30)(9,11,12,15)(10,14,13,16)(17,21,22,23)(18,26,24,32)(19,29,27,30)(20,31,25,28)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.