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