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