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