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)(7,12)(11,16)(13,15)(17,18)(19,28)(20,24)(21,35)(22,27)(23,32)(25,33)(26,34)(29,41)(30,42)(31,43)(36,37)(38,47)(39,48)(40,45)(44,46) involution — undirected(1,3)(2,7)(4,11)(5,13)(6,12)(8,15)(9,10)(14,16)(17,18)(19,23)(20,26)(21,25)(22,27)(24,34)(28,32)(29,37)(30,38)(31,40)(33,35)(36,41)(39,46)(42,47)(43,45)(44,48) involution — undirected(1,4,6,5)(2,8,9,14)(3,11,12,13)(7,15,10,16)(17,19,29,45,20,31,21,32,22,30,33,48,34,46,36,47)(18,23,37,43,26,40,25,28,27,38,35,44,24,39,41,42)(3,12)(7,10)(11,13)(15,16)(19,30)(23,38)(28,42)(31,46)(32,47)(39,40)(43,44)(45,48) involution — undirected(1,5,6,4)(2,8,9,14)(3,13,12,11)(7,15,10,16)(17,20,22,34)(18,24,27,26)(19,31,30,46)(21,33,36,29)(23,39,38,40)(25,37,41,35)(28,43,42,44)(32,48,47,45)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.