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