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