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