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