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