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