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