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