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