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)(17,18,21,25)(19,23,27,22)(20,24,29,28)(26,31,32,30)(33,34,39,37)(35,40,45,43)(36,41,47,38)(42,44,46,48)(1,3,7,6)(2,8,5,13)(4,10,11,12)(9,15,14,16)(17,19)(18,22)(20,26)(21,27)(23,25)(24,30)(28,31)(29,32)(33,35)(34,40)(36,46)(37,43)(38,44)(39,45)(41,48)(42,47)(2,5)(3,6)(4,11)(15,16)(17,18,21,25)(19,22,27,23)(20,28,29,24)(26,31,32,30)(33,36,39,47)(34,41,37,38)(35,42,45,46)(40,44,43,48)(1,4)(2,9)(3,10)(5,14)(6,12)(7,11)(8,15)(13,16)(17,18)(19,22)(20,24)(21,25)(23,27)(26,30)(28,29)(31,32)(33,37,39,34)(35,43,45,40)(36,41,47,38)(42,44,46,48)(1,5,7,2)(3,8,6,13)(4,9,11,14)(10,16,12,15)(17,19)(18,23)(20,26)(21,27)(22,25)(24,31)(28,30)(29,32)(33,38,39,41)(34,36,37,47)(35,44,45,48)(40,46,43,42)(1,6,7,3)(2,8,5,13)(4,12,11,10)(9,15,14,16)(17,20)(18,24)(19,26)(21,29)(22,30)(23,31)(25,28)(27,32)(33,35)(34,40)(36,46)(37,43)(38,44)(39,45)(41,48)(42,47)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.