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