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