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