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