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