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