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