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