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