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