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