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