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