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