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