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