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