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