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