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