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