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