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)(17,18,21,24)(19,22,26,29)(20,23,27,30)(25,31,32,28)(33,34,38,42)(35,43,45,48)(36,41,37,40)(39,46,47,44)(1,3,7,14)(2,8,4,11)(5,13,6,12)(9,16,15,10)(17,19)(18,22)(20,25)(21,26)(23,28)(24,29)(27,32)(30,31)(36,37)(40,41)(43,48)(44,46)(1,4,7,2)(3,11,14,8)(5,9,6,15)(10,13,16,12)(17,20)(18,23)(19,25)(21,27)(22,28)(24,30)(26,32)(29,31)(33,35)(34,39)(36,44)(37,46)(38,45)(40,43)(41,48)(42,47)(1,5,7,6)(2,9,4,15)(3,12,14,13)(8,10,11,16)(18,24)(22,29)(23,30)(28,31)(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.