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