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