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