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