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