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