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