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