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