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