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