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