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