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