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