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