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)(17,18,21,24)(19,26,27,32)(20,23,28,25)(22,30,31,29)(1,2)(3,7)(4,8)(5,6)(9,10)(11,15)(12,14)(13,16)(19,27)(22,31)(26,32)(29,30) involution — undirected(1,3,5,4)(2,7,6,8)(9,11)(10,13)(12,16)(14,15)(17,19,28,30,21,27,20,29)(18,22,23,32,24,31,25,26)(2,6)(7,8)(11,16)(13,15)(17,20,21,28)(18,23,24,25)(19,29,27,30)(22,32,31,26)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(18,24)(22,31)(23,25)(26,32)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.