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