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