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