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)(17,18,22,21)(19,23,27,25)(20,24,29,30)(26,31,32,28)(1,3,6,8)(2,4,7,5)(9,11,12,15)(10,13,14,16)(17,19)(18,23)(20,28)(21,25)(22,27)(24,26)(29,31)(30,32)(1,4,6,5)(2,3,7,8)(10,14)(13,16)(17,20)(18,24)(19,26)(21,30)(22,29)(23,31)(25,28)(27,32)(1,5,6,4)(2,3,7,8)(10,14)(13,16)(17,19)(18,25)(20,26)(21,23)(22,27)(24,28)(29,32)(30,31)(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.