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