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