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