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