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