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