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