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