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