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