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