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