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