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