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