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