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