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