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