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