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