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