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