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