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