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