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