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