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