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