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)(11,15)(12,16)(13,14)(19,25)(23,27)(26,31)(30,32)(1,3)(2,6)(4,7)(5,8)(10,14)(11,16)(17,18,22,21)(19,23,25,27)(20,28,29,24)(26,32,31,30)(2,4)(6,7)(9,11)(10,12)(13,16)(14,15)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31) involution — undirected(1,3,5,8)(2,6,4,7)(9,11)(10,12)(13,16)(14,15)(17,20,22,29)(18,24,21,28)(19,26,25,31)(23,30,27,32)(1,3)(2,6)(4,7)(5,8)(9,12)(10,11)(13,15)(14,16)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31) involution — undirected(1,4,5,2)(3,7,8,6)(17,21,22,18)(19,27,25,23)(20,28,29,24)(26,32,31,30)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.