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