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