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