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