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