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