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)(17,18,22,27,23,21,26,32)(19,24,20,25,28,30,29,31)(1,3)(2,5)(4,7)(6,8)(9,10)(11,14)(12,13)(15,16)(17,19)(18,24)(20,22)(21,30)(23,28)(25,27)(26,29)(31,32) involution — undirected(2,6)(3,7)(10,13)(14,15)(17,20)(18,25)(19,26)(21,31)(22,28)(23,29)(24,32)(27,30) involution — undirected(2,6)(5,8)(10,13)(14,15)(17,21,22,32,23,18,26,27)(19,24,20,25,28,30,29,31)(9,11,12,16)(10,14,13,15)(19,28)(20,29)(24,30)(25,31)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.