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