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