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