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