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