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