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