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