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