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