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