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