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