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