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