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