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