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