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