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