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