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