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)(19,25)(24,27)(26,30)(31,32)(1,3)(2,5)(4,8)(6,7)(18,22)(19,26)(20,28)(23,29)(25,30)(31,32) involution — undirected(10,13)(14,16)(17,18,21,23)(19,27,25,24)(20,29,28,22)(26,32,30,31)(2,6)(5,7)(9,11,12,15)(10,14,13,16)(18,23)(22,29)(24,27)(31,32)(3,8)(5,7)(17,19,21,25)(18,24,23,27)(20,30,28,26)(22,31,29,32)A 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.