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