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