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