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