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