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