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