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)(19,27)(20,23)(21,31)(22,26)(24,29)(25,28)(30,32) involution — undirected(1,2,7,13,5,9,4,6)(3,8,14,16,10,15,11,12)(17,19,28,30,22,29,21,20)(18,23,31,24,26,32,25,27)(1,3)(2,8)(4,11)(5,10)(6,12)(7,14)(9,15)(13,16)(17,20,21,29,22,30,28,19)(18,24,25,23,26,27,31,32)(2,9)(6,13)(8,15)(12,16) involution — undirected(2,9)(3,10)(6,13)(11,14)(19,29)(20,30)(23,32)(24,27) 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.