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