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