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