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