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