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