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