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