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