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