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