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