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