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