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