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