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