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