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