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