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