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