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