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