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