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