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)(18,20)(19,24)(22,30)(29,32)(33,34,39,43)(35,38,45,40)(36,46,44,41)(37,47,48,42)(1,2)(3,9)(4,12)(5,6)(7,11)(8,13)(10,14)(15,16)(17,18,23,20)(19,26,24,21)(22,25,30,28)(27,32,31,29)(33,35,39,45)(34,40,43,38)(36,37,44,48)(41,47,46,42)(2,6)(7,9)(8,12)(14,15)(17,19)(18,21)(20,26)(22,27)(23,24)(25,29)(28,32)(30,31)(33,36,39,44)(34,41,43,46)(35,37,45,48)(38,42,40,47)(1,2)(3,9)(4,8)(5,6)(7,11)(10,15)(12,13)(14,16)(17,20,23,18)(19,26,24,21)(22,28,30,25)(27,32,31,29)(33,37,39,48)(34,42,43,47)(35,44,45,36)(38,46,40,41)(1,3,5,11)(2,7,6,9)(4,10,13,16)(8,14,12,15)(17,21,23,26)(18,24,20,19)(22,29,30,32)(25,31,28,27)(33,35)(34,40)(36,37)(38,43)(39,45)(41,47)(42,46)(44,48)(1,4,5,13)(2,8,6,12)(3,10,11,16)(7,14,9,15)(17,22)(18,25)(19,27)(20,28)(21,29)(23,30)(24,31)(26,32)(33,38,39,40)(34,35,43,45)(36,42,44,47)(37,46,48,41)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.