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