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