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