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