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