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