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