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