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