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