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