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