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