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