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