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