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