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