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