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