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