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