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