One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(3,9)(4,12)(7,10)(8,13)(15,16)(17,18,22,26)(19,27,30,46)(20,31,35,45)(21,36,33,25)(23,38,40,28)(24,41,43,34)(29,47,37,42)(32,44,48,39)(1,2,5,8)(3,10,9,15)(4,13,12,6)(7,14,16,11)(17,19,22,30)(18,23,26,40)(20,32,35,48)(21,37,33,29)(24,42,43,47)(25,44,36,39)(27,45,46,31)(28,41,38,34)(1,3,5,9)(2,7,8,16)(4,14,12,11)(6,15,13,10)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.