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