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