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