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