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