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