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