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)(17,18,21,25,20,24,27,23)(19,26,30,32,29,22,28,31)(2,7,11,10)(3,13,9,14)(17,19,27,28,20,29,21,30)(18,22,23,32,24,26,25,31)(1,3)(2,8)(4,7)(5,14)(6,9)(10,15)(11,12)(13,16)(18,23)(19,28)(21,27)(22,26)(24,25)(29,30) involution — undirected(1,4,5,8,6,15,16,12)(2,9,10,13,11,3,7,14)(18,24)(22,26)(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.