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)(17,18,21,25)(19,26,28,32)(20,23,30,24)(22,27,31,29)(1,3)(2,6)(4,13)(5,10)(7,16)(8,15)(9,12)(11,14)(17,19)(18,22)(20,27)(21,28)(23,26)(24,32)(25,31)(29,30) involution — undirected(18,23)(19,27)(20,30)(24,25)(26,32)(28,29) involution — undirected(3,10)(6,15)(9,16)(11,13)(19,28)(22,31)(26,32)(27,29) involution — undirectedA 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.