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