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