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