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