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