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