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