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