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)(17,18,23,22)(19,21,26,31)(20,24,30,29)(25,27,32,28)(1,3)(2,5)(4,8)(6,7)(17,19)(18,21)(20,27)(22,31)(23,26)(24,32)(25,29)(28,30) involution — undirected(10,13)(14,16)(17,20,18,24,23,30,22,29)(19,25,31,28,26,32,21,27)(2,6)(5,7)(9,11,12,15)(10,14,13,16)(17,18,23,22)(19,21,26,31)(20,24,30,29)(25,27,32,28)(3,8)(5,7)(17,21,18,19,23,31,22,26)(20,28,24,32,30,27,29,25)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.