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