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