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