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