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