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