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)(17,18,23,26)(19,28,29,24)(20,22,27,31)(21,25,30,32)(2,6)(7,8)(9,11)(10,13)(12,15)(14,16)(17,19,23,29)(18,24,26,28)(20,25,27,32)(21,31,30,22)(1,3,5,4)(2,7,6,8)(10,14)(11,15)(17,20)(18,22)(19,25)(21,24)(23,27)(26,31)(28,30)(29,32)(1,4,5,3)(2,8,6,7)(10,14)(13,16)(17,21,22,19,23,30,31,29)(18,25,27,28,26,32,20,24)(2,6)(7,8)(17,22,23,31)(18,20,26,27)(19,21,29,30)(24,25,28,32)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.