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