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