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