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