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