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