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