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