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