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