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