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