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