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