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)(11,15,16,13)(17,18,21,24)(19,26,23,20)(22,25,31,32)(27,30,28,29)(1,3,5,4)(2,6,7,8)(17,19,21,23)(18,20,24,26)(22,27,31,28)(25,29,32,30)(9,11,12,16)(10,13,14,15)(19,27)(20,29)(22,31)(23,28)(25,32)(26,30)(1,4,5,3)(2,6,7,8)(17,20,21,26)(18,23,24,19)(22,29,31,30)(25,28,32,27)(19,27)(20,29)(22,31)(23,28)(25,32)(26,30) 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.