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