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