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