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