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