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)(17,18,21,25,23,26,22,32)(19,27,28,20,24,30,29,31)(2,7)(3,5)(4,11)(8,16)(9,10)(13,14)(17,18)(19,27)(20,29)(21,32)(22,25)(23,26)(24,30)(28,31) involution — undirected(1,3,6,5)(2,7,10,9)(4,11,13,14)(8,15,16,12)(17,19)(18,20)(21,28)(22,29)(23,24)(25,30)(26,31)(27,32)(1,4,6,13)(2,8,10,16)(3,11,5,14)(7,15,9,12)(17,20,23,31)(18,24,26,19)(21,27,22,30)(25,28,32,29)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.