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