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