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