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