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