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