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