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