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