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