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