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