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