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)(11,13)(12,14)(15,16)(17,18,22,23)(19,24,26,21)(20,28,31,25)(27,32,29,30)(1,3,5,4)(2,6,8,7)(9,11)(10,13)(12,15)(14,16)(17,19,22,26)(18,24,23,21)(20,29,31,27)(25,32,28,30)(1,3,5,4)(2,7,8,6)(10,14)(11,15)(17,20)(18,25)(19,27)(21,32)(22,31)(23,28)(24,30)(26,29)(10,14)(13,16)(17,21,23,19,22,24,18,26)(20,30,28,29,31,32,25,27)(1,4,5,3)(2,7,8,6)(17,18,22,23)(19,24,26,21)(20,28,31,25)(27,32,29,30)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.