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