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