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)(33,34,39,37)(35,40,36,43)(38,45,46,41)(42,48,44,47)(1,2,5,6)(3,7,9,10)(4,8,12,13)(11,14,15,16)(17,18,23,22)(19,28,27,24)(20,25,30,31)(21,32,29,26)(33,35,39,36)(34,40,37,43)(38,42,46,44)(41,47,45,48)(2,6)(4,12)(7,10)(11,15)(17,19,23,27)(18,24,22,28)(20,29,30,21)(25,32,31,26)(33,36,39,35)(34,40,37,43)(38,44,46,42)(41,47,45,48)(1,3,5,9)(2,7,6,10)(4,11,12,15)(8,14,13,16)(17,20)(18,25)(19,29)(21,27)(22,31)(23,30)(24,32)(26,28)(1,2)(3,10)(4,8)(5,6)(7,9)(11,16)(12,13)(14,15)(17,21,23,29)(18,26,22,32)(19,20,27,30)(24,25,28,31)(33,37,39,34)(35,40,36,43)(38,45,46,41)(42,47,44,48)(1,4)(2,8)(3,11)(5,12)(6,13)(7,14)(9,15)(10,16)(17,22,23,18)(19,28,27,24)(20,31,30,25)(21,32,29,26)(33,38)(34,41)(35,42)(36,44)(37,45)(39,46)(40,47)(43,48)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.