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