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