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