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