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