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