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