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