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