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