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