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