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