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