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)(17,18,22,25,21,23,20,29)(19,26,27,31,28,24,30,32)(3,8)(5,7)(9,10)(11,16)(12,15)(13,14)(18,23)(24,26)(25,29)(31,32) involution — undirected(1,3,4,8)(2,5,6,7)(9,11,13,12)(10,15,14,16)(17,19,21,28)(18,24,23,26)(20,30,22,27)(25,32,29,31)(2,6)(5,7)(9,11,13,12)(10,15,14,16)(17,20,21,22)(18,25,23,29)(19,27,28,30)(24,31,26,32)(9,12,13,11)(10,15,14,16)(17,20,21,22)(18,25,23,29)(19,27,28,30)(24,31,26,32)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.