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