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