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