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