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