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