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