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