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