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