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