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