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