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