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