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