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