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