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