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