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