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