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