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