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