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