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