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