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