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