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