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