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