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