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