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