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