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