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