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