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