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