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