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