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