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