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