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