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