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)(19,26)(20,21)(23,30)(24,28)(27,29)(31,32) involution — undirected(1,2)(3,7)(4,12)(5,8)(6,11)(9,14)(10,16)(13,15)(17,18)(19,23)(20,24)(21,28)(22,25)(26,31)(27,32)(29,30) involution — undirected(1,3,5,9)(2,7,8,14)(4,10,11,15)(6,13,12,16)(17,19)(18,23)(20,26)(21,29)(22,27)(24,31)(25,32)(28,30)(3,9)(7,14)(10,15)(13,16)(17,20,22,21)(18,24,25,28)(19,26,27,29)(23,31,32,30)(2,8)(6,12)(7,14)(13,16) 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.