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