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