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