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