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