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