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