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