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