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