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