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