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