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