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