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