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