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