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