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