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