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