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