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)(11,13)(12,14)(15,16)(17,18,23,27,22,21,26,32)(19,28,20,30,29,24,31,25)(1,3)(2,5)(4,8)(6,7)(9,11,12,15)(10,13,14,16)(17,19,22,29)(18,24,21,28)(20,26,31,23)(25,32,30,27)(10,14)(13,16)(17,20)(18,25)(19,26)(21,30)(22,31)(23,29)(24,32)(27,28) involution — undirected(3,8)(5,7)(18,21)(19,29)(20,31)(27,32) involution — undirected(2,6)(5,7)(17,21,23,32,22,18,26,27)(19,24,20,25,29,28,31,30)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.