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