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