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