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