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