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